What are some alternatives?
When comparing Touch Pianist and Yousician, you can also consider the following products
Simply Piano - Fast and fun way to learn piano
Pianu - Learn to play the piano in your browser.
Flowkey - The easiest way to learn piano with your iPhone or iPad
Type Drummer - Drum by typing
Melodics - Melodics is a desktop app that teaches you to play MIDI keyboards, pad controllers, and drums.
lightnote - An interactive site to learn the basics of music theory 🎶